Question

I created a class openPDF which takes a byte array as input and displays the PDF file with Adobe Reader. Code:

private void openPDF(byte[] PDFByteArray) {


    try {
        // create temp file that will hold byte array
        File tempPDF = File.createTempFile("temp", ".pdf", getCacheDir());
        tempPDF.deleteOnExit();

        FileOutputStream fos = new FileOutputStream(tempPDF);
        fos.write(PDFByteArray);
        fos.close();

        Intent intent = new Intent();
           intent.setAction(Intent.ACTION_VIEW);
           Uri uri = Uri.fromFile(tempPDF);
           intent.setDataAndType(uri, "application/pdf");
           intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);     

           startActivity(intent);


    } catch (IOException ex) {
        String s = ex.toString();
        ex.printStackTrace();
    }
}

When I pass the intend , the error from adobe reader is “Invalid file path”. I read all other posts related to downloading and viewing PDF in android but dint help much. Any suggestions?

Answer 1

I made this code to open an especific .pdf file existing in Dowloads folder with Adobe’s application

    File folder = new File(Environment.getExternalStorageDirectory(), "Download");
    File pdf = new File(folder, "Test.pdf");

    Uri uri = Uri.fromFile(pdf);

    PackageManager pm = getPackageManager();
    Intent intent = pm.getLaunchIntentForPackage("com.adobe.reader");
    intent.setDataAndType(uri, "application/pdf");
    startActivity(intent);

It works for me. So i guess your problem can be the temprorary file. Try to write the file to sdcard. To do this you will need add android.permission.WRITE_EXTERNAL_STORAGE to your AndroidManifest.xml.